CN112570683A - Bicycle frame integrated into one piece's die casting die - Google Patents
Bicycle frame integrated into one piece's die casting die Download PDFInfo
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- CN112570683A CN112570683A CN202011642652.7A CN202011642652A CN112570683A CN 112570683 A CN112570683 A CN 112570683A CN 202011642652 A CN202011642652 A CN 202011642652A CN 112570683 A CN112570683 A CN 112570683A
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- core
- pulling device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/24—Accessories for locating and holding cores or inserts
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to an integrally formed die-casting die for a bicycle frame, which comprises a fixed die (1), a movable die (2), a first core-pulling device (3), a second core-pulling device (4) and a third core-pulling device (5), wherein the fixed die (1) comprises a fixed die frame plate (11) and a fixed die core plate (12), the movable die (2) comprises a movable die frame plate (21) and a movable die core plate (22), the first core-pulling device (3) comprises a first hydraulic core-pulling device (31) and a lower beam rear fork core (32), the second core-pulling device (4) comprises a second hydraulic core-pulling device (41) and a head pipe core (42), and the third core-pulling device (5) comprises a third hydraulic core-pulling device (51) and a vertical pipe core (52).
Description
Technical Field
The invention relates to the technical field of bicycle production, in particular to a die-casting die for integrally forming a bicycle frame.
Background
Nowadays, the bicycle is a green vehicle and also a sports fitness equipment, and the bicycle is widely applied to daily life of people, and has the advantages of environmental protection, convenient use, body building and the like.
The frame is used as the framework of the whole bicycle, is an important key part of the bicycle, plays a role in playing a role in making the whole quality of the bicycle light and heavy, and determines and influences the correctness and the comfort of riding postures to a great extent. The bicycle frame is also improved and innovated along with the progress of science and technology, in order to make the frame lighter, stronger, more comfortable and more streamline and beautiful, the production and processing technology should be innovated while the strength of the connecting pipe fittings, the innovative structural design and the innovative materials are improved, however, the bicycle frame not only considers the weight, but also considers the mechanical tensile strength, the elastic coefficient, the bearing stress and the like.
The existing bicycle frame is usually produced by adopting a process of independently processing integral welding, and when the welding process is adopted for production and processing, the production efficiency is lower, a plurality of welding joints can be generated, the integral attractiveness of the bicycle is influenced, and the integral mechanical strength of the bicycle is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the die-casting die for integrally molding the bicycle frame, which has the advantages of simple and novel structure, high production efficiency, high integral mechanical strength and attractive appearance, and can integrally mold the bicycle frame.
The technical scheme adopted by the invention is as follows: a die casting die for integrally forming a bicycle frame comprises a fixed die 1, a movable die 2, a first core pulling device 3, a second core pulling device 4 and a third core pulling device 5, wherein the fixed die 1 comprises a fixed die frame plate 11 and a fixed die core plate 12, a sliding guide hole 13 is formed in the periphery of the fixed die frame plate 11, a positioning groove 14 is formed in the periphery of the fixed die core plate 12, the movable die 2 comprises a movable die frame plate 21 and a movable die core plate 22, a sliding guide pillar 23 is formed in the periphery of the movable die frame plate 21, a positioning boss 24 is formed in the periphery of the movable die core plate 22, the sliding guide pillar 23 is inserted into the sliding guide hole 13, the positioning boss 24 is inserted into the positioning groove 14, the fixed die core plate 12 is in close contact with the movable die core plate 22, a bicycle frame cavity 6 is arranged between the fixed die frame cavity and the movable die core plate, the bicycle frame cavity 6 comprises a head tube cavity, the flat tube cavity is internally provided with a flat tube core, the first core-pulling device 3 comprises a first hydraulic core-pulling device 31 and a lower beam back fork core 32, the first hydraulic core-pulling device 31 is fixedly arranged on the top surface of the movable mold frame plate 21, the lower beam back fork core 32 is connected with a piston rod of the first hydraulic core-pulling device 31, the lower beam back fork core 32 is inserted into the lower beam cavity and the back fork cavity, the second core-pulling device 4 comprises a second hydraulic core-pulling device 41 and a head tube core 42, the third core-pulling device 5 comprises a third hydraulic core-pulling device 51 and a vertical tube core 52, the second hydraulic core-pulling device 41 and the third hydraulic core-pulling device 51 are respectively and fixedly arranged on the right side surface of the movable mold frame plate 21, the head tube core 42 is connected with a piston rod of the second hydraulic core-pulling device 41, the head tube core 42 is inserted into the head tube cavity, the vertical tube core 52 is connected with a piston rod of the third hydraulic.
The further improvement is that the left side surface of the movable mold frame plate 21 is provided with an inclined guide post core pulling device 7, the inclined guide post core pulling device 7 comprises an inclined guide post 71, a sliding block 72 and a flat pipe connecting rib plate type block 73, the inclined guide post 71 is fixedly connected with the fixed mold frame plate 11, the sliding block 72 is slidably connected with the movable mold frame plate 21, and the flat pipe connecting rib plate type block 73 is inserted into a flat pipe cavity.
The further improvement lies in that an ejector plate is arranged on the rear side surface of the movable mold frame plate 21, an ejector pin is arranged on the ejector plate, and the ejector pin penetrates through the movable mold 2 and is inserted into the frame cavity 6.
The further improvement is that a slag ladle or a slag row is arranged around the frame cavity 6, and an exhaust hole is arranged on the slag ladle or the slag row.
The further improvement is that a sliding shaft sleeve is arranged in the sliding guide hole 13.
Compared with the prior art, the invention has the following beneficial effects:
the die-casting bicycle frame is simple and novel in structure, practical in function, capable of being integrally formed and high in production efficiency;
secondly, the frame cavity is optimally designed, each cavity is in arc transition, the whole is smooth, the streamline is elegant, the slag ladle or slag row distribution is reasonable, and the integrally formed and die-cast frame is high in overall mechanical strength and attractive in appearance;
the first core-pulling device, the second core-pulling device, the third core-pulling device and the inclined guide pillar core-pulling device can be used for pulling cores of the lower beam, the rear fork, the head pipe, the vertical pipe and the flat pipe connecting rib plate, a hollow unequal wall thickness structure of the bicycle frame can be achieved, the whole stress of the bicycle frame is more balanced, and the mechanical strength is higher.
Drawings
Figure 1 is a schematic structural view of the present invention,
FIG. 2 is a schematic structural diagram of a fixed mold in the invention,
FIG. 3 is a schematic three-dimensional structure of a fixed mold in the invention,
FIG. 4 is a schematic structural view of a movable mold, a first core-pulling device, a second core-pulling device, a third core-pulling device and an inclined guide post core-pulling device in the invention,
fig. 5 is a schematic three-dimensional structure diagram of a movable mold, a first core-pulling device, a second core-pulling device, a third core-pulling device and an inclined guide pillar core-pulling device in the invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in fig. 1, 2, 3, 4 and 5, an integrally formed die casting mold for a bicycle frame comprises a fixed mold 1, a movable mold 2, a first core pulling device 3, a second core pulling device 4 and a third core pulling device 5, wherein the fixed mold 1 is fixed on a fixed mold mounting plate of a die casting machine, a sprue gate is arranged on the fixed mold 1, the fixed mold 1 comprises a fixed mold frame plate 11 and a fixed mold core plate 12, a sliding guide hole 13 is arranged around the fixed mold frame plate 11, a sliding shaft sleeve is arranged in the sliding guide hole 13, a positioning groove 14 is arranged around the fixed mold core plate 12, the movable mold 2 is fixed on a movable mold mounting plate of the die casting machine, the movable mold 2 comprises a movable mold frame plate 21 and a movable mold core plate 22, a sliding guide pillar 23 is arranged around the movable mold frame plate 21, a positioning boss 24 is arranged around the movable mold core plate 22, the sliding guide pillar 23 is inserted into the sliding guide hole 13, a frame cavity 6 is arranged between the two, the frame cavity 6 comprises a head cavity, a vertical cavity, a flat cavity, an upper beam cavity, a lower beam cavity and a rear fork cavity, the adjacent cavities are in arc transition, each cavity is provided with a drawing slope, the flat cavity is arranged at the lower end lower side of the lower beam cavity, a flat tube core is arranged in the flat cavity, the symmetrical surface of the frame cavity 6 is a parting surface, the frame cavity 6 is divided into two halves by the symmetrical surface and is respectively arranged on the fixed die core plate 12 and the movable die core plate 22, a slag ladle or a slag row is arranged around the frame cavity 6, an exhaust hole is arranged on the slag ladle or the slag row, the first core-pulling device 3, the second core-pulling device 4 and the third core-pulling device 5 are hydraulic core-pulling mechanisms, the first core-pulling device 3 comprises a first hydraulic core-pulling device 31 and a lower beam rear fork core 32, the lower beam rear fork core 32 comprises a lower beam core and a rear fork core, the first hydraulic core-pulling device 31 is fixedly arranged, the lower beam rear fork core 32 is connected with a piston rod of the first hydraulic core puller 31, the lower beam rear fork core 32 is inserted into a lower beam cavity and a rear fork cavity, the second core pulling device 4 comprises a second hydraulic core puller 41 and a head tube core 42, the third core pulling device 5 comprises a third hydraulic core puller 51 and a vertical tube core 52, the second hydraulic core puller 41 and the third hydraulic core puller 51 are respectively and fixedly installed on the right side surface of the movable mold frame plate 21, the head tube core 42 is connected with the piston rod of the second hydraulic core puller 41, the head tube core 42 is inserted into the head tube cavity, the vertical tube core 52 is connected with the piston rod of the third hydraulic core puller 51, the vertical tube core 52 is inserted into the vertical tube cavity, the left side surface of the movable mold frame plate 21 is provided with an inclined guide post core pulling device 7, the inclined guide post core pulling device 7 comprises an inclined guide post 71, a sliding block 72 and a flat tube connecting rib plate type block 73, the inclined guide post 71 is fixedly, the sliding block 72 is connected with the movable mould frame plate 21 in a sliding mode, the flat pipe connecting rib plate type block 73 is inserted into the flat pipe cavity, the back side face of the movable mould frame plate 21 is provided with an ejector plate, an ejector pin is arranged on the ejector plate, and the ejector pin penetrates through the movable mould 2 and is inserted into the frame cavity 6.
The first core-pulling device 3, the second core-pulling device 4 and the third core-pulling device 5 are all hydraulic core-pulling mechanisms which are stable and reliable in action, large in core-pulling force and long in core-pulling distance, the first core-pulling device 3 is used for pulling cores of the lower beam and the rear fork, the lower beam rear fork core 32 comprises a lower beam core and a rear fork core, the lower beam core is in a long column shape, the rear fork core is in a block shape, the lower beam rear fork core 32 is in an integrated structural design, the mechanical strength of the core can be enhanced, the shape and the straightness of the core are good, the core is not easy to deform and damage, the service life of the die can be prolonged, the die-casting yield of the bicycle frame can be improved, the second core-pulling device 4 is used for pulling cores of the head tube, the third core-pulling device 5 is used for pulling cores of the head tube, the vertical tube and the lower beam are in a core-pulling cross penetrating design, the stress of, can improve die-casting product quality, the oblique guide pillar device of loosing core 7 is loosed core to flat union coupling gusset, and the design of loosing core more can realize the hollow wall thickness structure that varies of bicycle frame, makes the whole atress of frame more balanced, and mechanical strength is higher, and the order of loosing core is taken out during the die sinking, progressively releases mould locking force, makes the demolding more smooth and easy, and product stress release is more even, shortens the process step, improves production efficiency.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (5)
1. A die-casting die for integrally forming a bicycle frame is characterized by comprising a fixed die (1), a movable die (2), a first core-pulling device (3), a second core-pulling device (4) and a third core-pulling device (5), wherein the fixed die (1) comprises a fixed die frame plate (11) and a fixed die core plate (12), sliding guide holes (13) are formed in the periphery of the fixed die frame plate (11), positioning grooves (14) are formed in the periphery of the fixed die core plate (12), the movable die (2) comprises a movable die frame plate (21) and a movable die core plate (22), sliding guide pillars (23) are arranged in the periphery of the movable die frame plate (21), positioning bosses (24) are arranged in the periphery of the movable die core plate (22), the sliding guide pillars (23) are inserted into the sliding guide holes (13), the positioning bosses (24) are inserted into the positioning grooves (14), and the fixed die core plate (12) is in close, a frame cavity (6) is arranged between the first hydraulic core-pulling device and the second hydraulic core-pulling device, the frame cavity (6) comprises a head tube cavity, a vertical tube cavity, a flat tube cavity, an upper beam cavity, a lower beam cavity and a rear fork cavity, the flat tube cavity is arranged at the lower side of the lower end of the lower beam cavity, a flat tube core is arranged in the flat tube cavity, the first core-pulling device (3) comprises a first hydraulic core-pulling device (31) and a lower beam rear fork core (32), the first hydraulic core-pulling device (31) is fixedly arranged on the top surface of the movable mold frame plate (21), the lower beam rear fork core (32) is connected with a piston rod of the first hydraulic core-pulling device (31), the lower beam rear fork core (32) is inserted into the lower beam cavity and the rear fork cavity, the second core-pulling device (4) comprises a second hydraulic core-pulling device (41) and a head tube core (42), the third core-pulling device (5) comprises a third hydraulic core-pulling device (51) and a vertical tube core (52), the second hydraulic core-pulling device, the head pipe core (42) is connected with a piston rod of the second hydraulic core-pulling device (41), the head pipe core (42) is inserted into the head pipe cavity, the vertical pipe core (52) is connected with a piston rod of the third hydraulic core-pulling device (51), and the vertical pipe core (52) is inserted into the vertical pipe cavity.
2. The die-casting die for the integral forming of the bicycle frame is characterized in that an inclined guide post core-pulling device (7) is arranged on the left side face of the movable die frame plate (21), the inclined guide post core-pulling device (7) comprises an inclined guide post (71), a sliding block (72) and a flat pipe connecting rib plate type block (73), the inclined guide post (71) is fixedly connected with the fixed die frame plate (11), the sliding block (72) is slidably connected with the movable die frame plate (21), and the flat pipe connecting rib plate type block (73) is inserted into a flat pipe cavity.
3. The die-casting mold for the integral forming of the bicycle frame as claimed in claim 1, wherein the movable mold frame plate (21) is provided with an ejector plate on the rear side surface, the ejector plate is provided with an ejector pin, and the ejector pin penetrates through the movable mold (2) and is inserted into the frame cavity (6).
4. The die-casting die for the integral forming of the bicycle frame as claimed in claim 1, wherein a slag ladle or a slag discharge is arranged around the frame cavity (6), and the slag ladle or the slag discharge is provided with an exhaust hole.
5. The integrally formed die casting mold for the bicycle frame as claimed in claim 1, wherein a sliding bushing is provided in the sliding guide hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642652.7A CN112570683A (en) | 2020-12-30 | 2020-12-30 | Bicycle frame integrated into one piece's die casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642652.7A CN112570683A (en) | 2020-12-30 | 2020-12-30 | Bicycle frame integrated into one piece's die casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112570683A true CN112570683A (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011642652.7A Pending CN112570683A (en) | 2020-12-30 | 2020-12-30 | Bicycle frame integrated into one piece's die casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112570683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117182584A (en) * | 2023-11-07 | 2023-12-08 | 烟台东星集团有限公司 | Machining machine for die-casting, cutting and forming shaft sleeve |
| CN117961448A (en) * | 2024-03-28 | 2024-05-03 | 山东华瑞驰达电动车有限公司 | Integrated forming device and process for electric vehicle frame |
-
2020
- 2020-12-30 CN CN202011642652.7A patent/CN112570683A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117182584A (en) * | 2023-11-07 | 2023-12-08 | 烟台东星集团有限公司 | Machining machine for die-casting, cutting and forming shaft sleeve |
| CN117182584B (en) * | 2023-11-07 | 2024-02-06 | 烟台东星集团有限公司 | Machining machine for die-casting, cutting and forming shaft sleeve |
| CN117961448A (en) * | 2024-03-28 | 2024-05-03 | 山东华瑞驰达电动车有限公司 | Integrated forming device and process for electric vehicle frame |
| CN117961448B (en) * | 2024-03-28 | 2024-06-28 | 山东华瑞驰达电动车有限公司 | Integrated forming device and process for electric vehicle frame |
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